[Greenbuilding] Commercial Water Heaters

[Richard Garbary]

Paul:

Awesome hack! It's too bad the ability to  de-rate wasn't a built-in
feature. Yesterday, I took out the timer for our 60 gallon Rheem and
replaced it with a digital touch screen dimmer. I've set it for 25%
meaning bottom element is 94 watts and the top 188 watts (fast
recovery!), for a max consumption of 4.5 kwh per day. In the summer,
4.5 kwh usage is about right. I may need to adjust accordingly. I'll
post some new charts over the next few days. The spreadsheet gives the
% output and corresponding kw numbers.

http://flatteningthecurve.wordpress.com/

Richard

===========================================================
On Tue, Jul 17, 2012 at 1:09 PM, Paul Eldridge
<paul.eldridge at ns.sympatico.ca> wrote:
> Hi Jessica,
>
> I'm afraid our client won't permit any significant alterations to their DHW
> delivery system. It was a major struggle just to get them to agree to
> de-rating these tanks, and they're still far from sold on the idea.  The
> fact that we're willing to do this work at no charge and that we promised to
> quickly restore things to as they were if they're unhappy with the results
> gave us our one and only shot.  Personally, I would put these tanks under a
> load controller so that they never cycle on at peak, but short of holding a
> gun to our client's head, this is the best that we can do.
>
> Cheers,
> Paul
>
>
>
>>Volume storage could allow you to cascade around peak demand times, reduce
>>standby losses and make monitoring easy.
>
>
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